Coil unit and electric valve

Abstract

A coil unit and an electric valve are disclosed. The coil unit (100) includes a control box (1). The control box (1) includes a first housing part (11) and a second housing part (12) that are fixedly connected. The second housing part (12) includes an insertion port part (122) and a first connection member (121). The insertion port part (122) has a second chamber (1221). The first connection member (121) has a first end part (1211) and a second end part (1212). A part of the first end part (1211) is located in the first chamber (13), and a part of the second end part (1212) is located in the second chamber (1221). The first end part (1211) is connected to be crimped to the electronic control board (3). The first connection member (121) can be electrically connected and / or signal-connected to the electronic control board (3). By arranging it in this way, the installation of the coil unit is simplified. Also, when it is necessary to replace the number of the first connection members (121), it is not necessary to re-develop the entire coil unit, the development cost of the coil unit can be reduced, and further, the development cost of the electric valve can be reduced.

Description

Technical Field

[0001] This application claims the priority of two Chinese patent applications, one filed with the China National Patent Office on July 1, 2022, with an application number of 202210773656.1 and an invention title of "Coil Unit and Electric Valve", and the other filed with the China National Patent Office on July 26, 2022, with an application number of 202210882659.9 and an invention title of "Control Device and Electric Valve", and all of their contents are incorporated herein by reference.

[0002] The present invention relates to the technical field of fluid control, and specifically to a coil unit and an electric valve.

Background Art

[0003] An electric valve includes a coil unit, and the coil unit includes a stator member, a control box, and an electronic control board. This electronic control board is located within a space formed from the control box, and this control box includes a first housing part and a second housing part that are fixedly connected. The first housing part has an insertion port, and this insertion port has pins for making electrical connections or signal connections to external devices. And the first housing part is integrally formed with an injection molded body poured around the outer periphery of the stator member or fixed in another way. When it is necessary to change the number of pins, the first housing part, or the combination of the first housing part and the stator member, has to be re-developed, which is disadvantageous for reducing the development cost of the coil unit or the electric valve.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present invention is to provide a coil unit and an electric valve, simplify the installation of the coil unit, and reduce the development cost of the coil unit or the electric valve.

Means for Solving the Problems

[0005] To achieve the above objective, the coil unit of the present invention includes a control box, a stator member, and an electronic control board, wherein the control box comprises a first chamber, the electronic control board is located in the first chamber, the stator member comprises a first pin connected to the electronic control board, the control box comprises a fixed and connected first housing portion and a second housing portion, the second housing portion comprises an insertion port portion and a first connecting member, the insertion port portion comprises a second chamber, the first connecting member comprises a first end and a second end, a portion of the first end is located in the first chamber, a portion of the second end is located in the second chamber, the first end is connected so as to be crimped to the electronic control board, and the first connecting member is electrically and / or signalably connectable to the electronic control board.

[0006] An electric valve, comprising the above-mentioned coil unit, further comprising a valve member and a valve body block fixedly connected, wherein the coil unit is fixedly connected to the valve body block or the valve member. [Effects of the Invention]

[0007] In embodiments provided by the present invention, the control box includes a fixed and connected first housing portion and a second housing portion, the second housing portion includes an insertion port portion and a first connecting member, the insertion port portion comprises a second chamber, the first connecting member comprises a first end portion and a second end portion, part of the first end portion is located in the first chamber, part of the second end portion is located in the second chamber, the first end portion is connected so as to be crimped to an electronic control board, and the first connecting member is electrically and / or signalably connectable to the electronic control board. This arrangement simplifies the installation of the coil unit, and when it is necessary to adjust the number of first connecting members, it is not necessary to redevelop the entire coil unit, thereby reducing the development cost of the coil unit and further reducing the development cost of the electric valve. [Brief explanation of the drawing]

[0008] [Figure 1]This is a front view of a coil unit which is the first embodiment of the present invention. [Figure 2] This is a cross-sectional view of the coil unit along the AA plane in Figure 1. [Figure 3] This is a cross-sectional view of the coil unit in Figure 1, taken away from the AA plane. [Figure 4] This is a plan view of the coil unit shown in Figure 1 with the first housing portion removed. [Figure 5] This is a plan view of the coil unit shown in Figure 1 with the first housing and electronic control board removed. [Figure 6] Figure 5 shows a stereoscopic view of the structure from a different viewing angle. [Figure 7] Figure 1 is a front view of the first housing section. [Figure 8] Figure 7 shows a stereoscopic view of the first housing section from a different viewing angle. [Figure 9] Figure 7 shows a cross-sectional view along the BB surface of the first housing portion. [Figure 10] Figure 7 shows a cross-sectional view of the first housing portion, detached from the BB surface. [Figure 11] This is a front view of an electric valve, which is an embodiment of the present invention. [Figure 12] This is a cross-sectional view along the CC surface of the electric valve shown in Figure 11. [Figure 13] Figure 11 is a front view of another embodiment of the electric valve shown. [Figure 14] This is a cross-sectional view from one viewing angle of another embodiment of the coil unit. [Figure 15] Figure 14 shows a cross-sectional view of the coil unit from a different viewing angle. [Figure 16] This is a 3D view of an injection molding unit from one viewing angle. [Figure 17] Figure 16 shows the injection molding unit from a different viewing angle. [Figure 18] This is a view of the injection molding unit shown in Figure 16 from a different viewing angle. [Figure 19] Figure 16 is a cross-sectional view of the injection molding unit from one viewing angle. [Figure 20] It is a cross-sectional view from one viewing angle of another embodiment of the coil unit. [Figure 21] It is a cross-sectional view from one viewing angle of another embodiment of the coil unit.

Embodiments for Carrying out the Invention

[0009] Hereinafter, the present invention will be further described with reference to the drawings and embodiments.

[0010] As shown in FIGS. 1 to 3, a first embodiment of the coil unit 100 is shown. The coil unit 100 in this embodiment includes a control box 1, a stator member 2, and an electronic control board 3. The control box 1 has a first chamber 13. The electronic control board 3 is located in the first chamber 13. The stator member 2 has a first pin 21 connected to the electronic control board 3. And the first pin 21 in this embodiment is fixed to the electronic control board 3 by welding. In other embodiments, it may be fixed by crimping in a manner such as a fish-eye pin. One end of some of the first pins 21 is connected to the winding inside the stator member 2, and the other end is connected to the electronic control board 3. The number of the first pins 21 may be set according to needs. And the control box 1 includes a first housing part 11 and a second housing part 12 that are fixedly connected. The coil unit 100 in this embodiment includes an injection molding part 4 that covers at least a part of the stator member 2. The injection molding part 4 and the first housing part 11 in this embodiment are integrally injection molded. Of course, in other embodiments, the injection molding part 4 and the first housing part 11 may be separately molded and then fixed by means such as welding, locking, and bolt connection. In addition, the second housing part 12 includes a first connection member 121 and an insertion port part 122. The insertion port part 122 has a second chamber 1221. The first connection member 121 has a first end part 1211 and a second end part 1212. A part of the first end part 1211 is located in the first chamber 13, and a part of the second end part 1212 is located in the second chamber 1221. The first end part 1211 is connected so as to be crimped to the electronic control board 3. The first end part 1211 of the first connection member 121 can be electrically connected and / or signal-connected to the electronic control board 3. The second end part 1212 of the first connection member 121 can be electrically connected or signal-connected to an external device. By arranging in this way, the first end part 1211 is connected so as to be crimped to the electronic control board 3, simplifying the connection between the first connection member 121 and the electronic control board 3. Further, the connection between the first housing part 11 and the second housing part 12 is simplified. Also, when it is necessary to exchange the number of the first connection members 121, there is no need to redesign the first housing part 11 or the combined body of the first housing part 11 and the stator member 2. It is only necessary to change the second housing part 12 and the electronic control board 3 within a small range. For example, by adjusting the number of the first connection members 121, that is, there is no need to develop and design the entire coil unit anew, and the development cost of the coil unit 100 can be reduced.

[0011] As shown in FIG. 2, in this embodiment, the electronic control board 3 is located above the stator member 2, and the direction parallel to the electronic control board 3 is defined as the lateral direction. The directions in the present invention merely indicate relative positions.

[0012] As shown in FIGS. 2 and 3, in this embodiment, the first housing part 11 and the second housing part 12 are fixed by welding. The welding methods include laser welding, ultrasonic welding, etc. Specifically, in this embodiment, the first housing part 11 and the second housing part 12 are fixed by laser welding and sealed by welding. A sealing member may be further provided between the first housing part 11 and the second housing part 12. In other embodiments, the first housing portion 11 and the second housing portion 12 may be fixed and connected by a buckle, and the space between the first housing portion 11 and the second housing portion 12 may be sealed by a sealing member.

[0013] As shown in Figures 2 to 7, the second housing portion 12 in this embodiment further includes a plate portion 123, and the second housing portion 12 is fixed and connected to the first housing portion 11 by the plate portion 123. In this embodiment, the plate portion 123 and the insertion port portion 122 are injection molded as a single unit, and the number of first connecting members 121 is set according to the needs, for example, three, four, or five can be set. The main body portion of the first connecting member 121 is manufactured from a metal material and can exhibit conductive properties. During injection molding, the first connecting member 121 is used as an injection molding insert to integrally injection mold the second housing portion 12. The first end 1211 and a portion of the second end 1212 of the first connecting member 121 are encased in injection-molded material, and the first connecting member 121 is fixed and connected to the insertion port 122 by injection molding. In this embodiment, the first connecting member 121 includes an adapter portion 1213, and at least a part of the adapter portion 1213 is encased in injection-molded material. In other embodiments, the first connecting member 121 does not necessarily have to be fixed to the insertion port 122 by injection molding, but may be pre-injected as a single row, that is, the pin header is fixed in a single row by the injection-molded connecting portion, the injection-molded connecting portion encloses the adapter portion 1213 between the first end 1211 and the second end 1212, the insertion port 122 has several through holes reserved for the first end 1211 to pass through, or a through hole reserved in advance for the injection-molded connecting portion to pass through, and further, the connection strength and sealing performance between the first connecting member 121 and the insertion port 122 may be improved by methods such as adding adhesive or welding. As shown in Figures 14 to 19, in one embodiment in which the first connecting member 121 is pre-injected molded in a single row, the first connecting member 121 is pre-injected molded in a single row to form an injection molded unit 8, the injection molded unit 8 includes the first connecting member 121 and the injection molded connecting portion, the insertion port portion 122 has several through holes 1222 through which the first end portion 1211 of the first connecting member 121 passes, and furthermore, after the first end portion 1211 has passed through the through holes 1222, the gap between the first end portion 1211 and the through holes may be sealed by means of adhesive, welding, adhesive filling, etc. to improve the connection strength. During installation, first the injection molding unit 8 is assembled to the electronic control board 3, and then the second housing portion 12 is assembled to the first housing portion 11. When assembling the second housing portion 12, the first end portion 1211 of the first connecting member 121 is connected by passing through the through hole 1222 of the insertion port portion 122, and the first end portion 1211 is crimped to the electronic control board 3. The first connecting member 121 is electrically and / or signalably connected to the electronic control board 3. For other structures, refer to the other embodiments described above or below. As shown in Figure 20, in another embodiment in which the first connecting member 121 is pre-injected in a row, the first connecting member 121 is pre-injected in a row to form an injection molding unit 8, the injection molding unit 8 includes the first connecting member 121 and the injection molding connection part, the insertion port 122 has a through hole 1222 through which the injection molding unit 8 passes, and the injection molding unit 8 is fixedly connected to the insertion port 122 through the through hole, or connected in such a way that its position is restricted. During installation, the injection molding unit 8 is first assembled into the second housing portion 12, and after the two are assembled, it is engaged with the first housing portion 11 and the electronic control board 3. A sealing member 82 may be further provided between the injection molding unit 8 and the insertion port portion 122 for sealing. The first end portion 1211 is connected so as to be crimped to the electronic control board 3, and the first connecting member 121 is electrically and / or signalably connectable to the electronic control board 3. For other structures, refer to the other embodiments described above or below.

[0014] As shown in Figures 2 to 8, the first end portion 1211 in this embodiment is in the form of a fisheye pin, and the first end portion 1211 is provided with a first needle portion 1214, the first needle portion 1214 is provided with a first needle hole 1215, the electronic control board 3 is provided with a first through hole 31, and the first end portion 1211 is crimped and connected to the electronic control board 3 by the first needle portion 1214. The first needle portion 1214 is press-fitted into the first through hole 31 and crimped in place. After this, the first needle hole 1215 shrinks and deforms, and the first needle portion 1214 is pressed against the wall forming the first through hole 31 and then tightly engaged. The wall forming the first through-hole 31 is manufactured from a metal material, thereby enabling the first connecting member 121 to be electrically connected to the electronic control board 3. By arranging them in this manner, the connection between the first connecting member 121 and the electronic control board 3 can be simplified, and further, the attachment of the second housing portion 12 and the first housing portion 11 can be simplified.

[0015] As shown in Figures 2, 3, and 7 to 10, the second housing portion 12 in this embodiment includes several position limiting portions 124 that protrude downward from the lower end surface of the second housing portion 12. In this embodiment, the position limiting portion 124 is positioned to protrude downward from the lower end surface of the insertion port portion 122. The position limiting portion 124 is located between adjacent first end portions 1211, or is positioned relatively close to the first end portions 1211. When the first end portion 1211 and the electronic control board 3 are pressed together in a predetermined position, the position limiting portion 124 abuts against and engages with the electronic control board 3, thereby ensuring that the first end portion 1211 is sufficiently pressed together. In other embodiments, the position limiting portion 124 may be formed to enclose a portion of the upper part of the first end portion 1211 by injection molding.

[0016] As shown in Figures 2 to 7, the first housing portion 11 in this embodiment further comprises a first support portion 111, a second support portion 112, and a third support portion 113. Furthermore, the first housing portion 11 further includes a first side wall portion 115, a second side wall portion 116, and a third side wall portion 117, wherein the first side wall portion 115 and the second side wall portion 116 are arranged opposite each other, and the third side wall portion 117 is connected to the first side wall portion 115 and the second side wall portion 116, respectively. The first support portion 111 is positioned close to the first side wall portion 115, and the second support portion 112 is positioned close to the second side wall portion 116. In this embodiment, the first support portion 111 and the second support portion 112 are arranged symmetrically, the third support portion 113 is positioned close to the third side wall portion 117, and the electronic control board 3 is positioned in contact with the first support portion 111, the second support portion 112, and the third support portion 113, respectively, and the first support portion 111, the second support portion 112, and the third support portion 113 are located in different positions to stably support the electronic control board 3.

[0017] As shown in Figures 2 to 7, the first housing portion 11 in this embodiment further includes a fourth support portion 114, the third support portion 113 is located between the first end portion 1211 and the third side wall portion 117, the third support portion 113 is located on the side of the first end portion 1211 that is relatively closer to the third side wall portion 117, and the fourth support portion 114 is located on the side of the first end portion 1211 that is relatively further away from the third side wall portion 117. In other words, the third support portion 113 is located to the right of the first end portion 1211 in Figure 3, the fourth support portion 114 is located to the left of the first end portion 1211 in Figure 3, the electronic control board 3 is in contact with the fourth support portion 114, the first housing portion 11 has a first groove 118 located between the third support portion 113 and the fourth support portion 114, and the portion of the first end portion 1211 that passes through the electronic control board 3 is housed in the first groove 118. By arranging them in this manner, interference with the first end portion 1211 is prevented, and by arranging the third support portion 113 and the fourth support portion 114, it is possible to prevent the electronic control board 3 from being pressed and damaged during crimping. In this embodiment, the opening of the insertion port 122 is positioned to face upward, thereby reducing the lateral length of the coil unit 100. Furthermore, the female connector of the external device that engages with the insertion port 122 engages with the insertion port 122 from top to bottom, thereby preventing the coil unit 100 from interfering with lateral members. In other embodiments, the opening of the insertion port 122 may be provided in the lateral direction, depending on the needs.

[0018] As shown in Figures 2 to 7, the first housing portion 11 in this embodiment further includes several positioning portions 1111 positioned close to the third side wall portion 117, and the electronic control board 3 is provided with positioning grooves 32, some of the positioning portions 1111 are housed in the positioning grooves 32, and the positioning portions 1111 are engaged with the positioning grooves 32 to provide positioning for mounting the electronic control board 3 and improve the mounting accuracy of the electronic control board 3. In this embodiment, there are two positioning units 1111, and they are arranged symmetrically. This arrangement allows the external forces acting on the electronic control board 3 to be balanced.

[0019] As shown in Figures 2 to 7, the first housing portion 11 in this embodiment is equipped with several positioning columns 119, and the second housing portion 12 is equipped with positioning hole columns 125 corresponding to the number of positioning columns 119. The positioning hole column 125 is equipped with a positioning hole (not shown in the figure) with an opening facing downwards. The positioning hole column 125 is located on the lower end surface of the second housing portion 12, and the upper end of the positioning column 119 is located in the positioning hole. The positioning column 119 is in contact with or gap-fitted to the side wall forming the positioning hole, thereby limiting the lateral relative position between the first housing portion 11 and the second housing portion 12. In this embodiment, there are two positioning columns 119, and the two positioning columns 119 are arranged symmetrically. In other embodiments, the positioning hole column 125 may not be provided, and a concave positioning hole may be directly formed on the lower surface of the second housing portion 12.

[0020] As shown in Figures 2 to 7, in this embodiment, in the second embodiment of the coil unit 100, compared to the first embodiment, the first end portion 1211 in this embodiment is columnar, and one end of the first end portion 1211 that approaches the electronic control board 3 is provided with a guide portion, the electronic control board 3 is provided with a first through hole 31, the first end portion 1211 is crimped and connected to the electronic control board 3 and press-fitted into the first through hole 31 and tightly engaged with the wall forming the first through hole 31, the outer diameter of the guide portion that approaches the electronic control board 3 gradually contracts and the guide portion provides guidance for crimping the first end portion 1211.

[0021] As shown in Figures 2 to 7, this embodiment is a third embodiment of the coil unit 100, in which, compared to the first embodiment, the electronic control board 3 in this embodiment is equipped with an elastic outlet (not shown in the figures), and the first end 1211 is crimped and connected to the electronic control board 3 by the elastic outlet, the first end 1211 is press-fitted into the elastic outlet, this elastic outlet expands, and the first end 1211 is in close contact with the inner wall of the elastic outlet, and the elastic outlet may be, for example, a substantially petal-shaped structure composed of several elastic metal pieces.

[0022] As shown in Figures 11 and 12, the present invention provides an embodiment of an electric valve 101, the electric valve 101 including the coil unit 100 and further including a valve member 5 and a valve body block 6 which are fixedly connected, the coil unit 100 being fixedly connected to or detachably connected to the valve body block 6, the fixing method including bolt connection, locking, etc., or the coil unit 100 being fixedly connected to the valve member 5, and both together being fixedly connected to or detachably connected to the valve body block 6. The valve member 5 includes a valve seat member 51, a rotor unit 52, a valve body unit 53, a nut unit 54, and a sleeve 55. The valve body unit 53 is connected to the rotor unit 52. The stator member 2 is located on the outside of the sleeve 55, and the rotor unit 52 is located on the inside of the sleeve 55. By passing a predetermined current through the stator member 2, an excitation magnetic field is generated, causing the rotor unit 52 to rotate, and the rotor unit 52, in turn, rotates the valve body unit 53. The valve body unit 53 is screw-engaged to the nut unit 54, converting the rotation of the rotor unit 52 into axial movement of the valve body unit 53 relative to the valve seat member 51. The valve seat member 51 is equipped with a valve port 511, and the valve body unit 53 can adjust the flow area of ​​the valve port 511 and further adjust the flow rate of the working medium passing through the valve port 511. As shown in Figure 13, the electric valve in this embodiment further includes a connecting member 7. The connecting member 7 includes a connecting plate 71 and a locking portion 72. The connecting plate 71 is fixed to and connected to the coil unit 100, and the connection method includes heat crimping, ultrasonic welding, etc. The locking portion 72 has a certain elasticity, and the connecting member 7 is detachably connected to the valve body block 6 by this locking portion 72. The locking portion 72 includes a locking hook 721 and a handle portion 722. The locking hook 721 engages with the valve body block 6 to prevent the coil unit 100 from detaching from the valve body block 6, and by engaging the handle portion 722 with an external tool, the locking portion 72 is pulled up and the coil unit 100 is detached from the valve body block 6.

[0023] In this embodiment, the valve body block 6 is individually molded, while in other embodiments, the valve body block 6 may be part of another component, for example, part of a connecting block in an integrated unit, or part of a heat exchange unit.

[0024] As shown in Figure 21, in another embodiment of the coil unit 100, the second housing portion 12 includes a plate portion 123 and an insertion port portion 122, the second housing portion 12 is fixed and connected to the first housing portion 11 by the plate portion 123, the plate portion 123 and the insertion port portion 122 are separate structures, the plate portion 123 is fixed and connected to the insertion port portion 122, the fixing method includes welding, riveting, riveting and welding, or riveting and bonding, the plate portion 123 has a through hole 1222, the insertion port portion 122 passes through the plate portion 123, and a sealing member 82 for sealing may be provided between the insertion port portion 122 and the plate portion 123. The first connecting member 121 is formed by injection molding an insertion port 122 as an injection-molded insert, and a portion of the first end 1211 and the second end 1212 is encased in injection-molded material, the first end 1211 is connected so as to be crimped to the electronic control board 3, and the first connecting member 121 is electrically and / or signalably connectable to the electronic control board 3. When the first connecting member 121 is damaged, the insertion port 122 and the second housing portion 12, which includes the first connecting member 121, can be replaced, thereby reducing maintenance costs and facilitating maintenance of the coil unit 100. When it is necessary to replace the number of first connecting members 121, there is no need to develop a new product from scratch. Instead, the second housing portion 12, which includes the insertion port portion 122 and the first connecting members 121, needs to be redesigned, thereby reducing development costs.

[0025] The embodiments described above are for illustrative purposes only and have been explained in detail, but any modifications or equivalent substitutions can be made to the present invention, and any improvements that do not depart from the spirit and scope of the invention will fall within the scope of the claims of the present invention.

Claims

1. A coil unit including a control box, a stator member, and an electronic control board, The control box comprises a first chamber, The electronic control board is located in the first chamber, The stator member is provided with a first pin connected to the electronic control board, The control box includes a first housing section and a second housing section that are fixed and connected. The second housing portion includes an insertion port and a first connecting member, The insertion port portion is equipped with a second chamber, The first connecting member comprises a first end and a second end, A portion of the first end is located in the first chamber, A portion of the second end is located in the second chamber, The first end is connected so as to be crimped to the electronic control board, The first connecting member is capable of electrical and / or signal connection to the electronic control board. The second housing portion includes several position limiting portions, The position limiting portion is positioned to protrude downward from the lower end surface of the second housing portion. The position limiting portion is located between adjacent first ends, or is arranged relatively close to the first ends. A coil unit characterized in that, when the first end and the electronic control board are crimped together in a predetermined position, the position limiting portion is in contact with and engaged with the electronic control board.

2. The first end portion is provided with a first needle portion, The first needle portion is provided with a first needle hole, The electronic control board is provided with a first through hole, The first end is crimped and connected to the electronic control board by the first needle portion. The coil unit according to claim 1, characterized in that the first needle portion is press-fitted into the first through hole, and after crimping, the first needle hole shrinks and distorts, and the first needle portion is tightly engaged with the wall forming the first through hole.

3. The first end is columnar, The end of the first end that approaches the electronic control board is provided with a guide portion. The electronic control board is provided with a first through hole, The first end is crimped and connected to the electronic control board, press-fitted into the first through-hole, and tightly engaged with the wall forming the first through-hole. The outer diameter of the guide portion approaching the electronic control board gradually shrinks, The coil unit according to claim 1, characterized in that the guide portion provides a guide for crimping the first end.

4. The aforementioned electronic control board is equipped with an elastic outlet, The first end is crimped and connected to the electronic control board by the elastic connector. The first end is press-fitted into the elastic socket. The aforementioned elastic outlet expands, The coil unit according to claim 1, characterized in that the first end is in close contact with the inner wall of the elastic outlet.

5. The first housing portion and the second housing portion are fixed together by welding and sealed by the welded surface, or sealed by the welded surface and a sealing member, or the first housing portion and the second housing portion are fixed together by a buckle and connected. The coil unit according to claim 1, characterized in that the space between the first housing portion and the second housing portion is sealed by a sealing member.

6. The second housing portion further includes a plate portion, The plate portion fixes and connects the second housing portion to the first housing portion. The plate portion and the insertion port portion are injection molded as a single unit, and the second housing portion is injection molded as a single unit with the first connecting member as an injection molded insert. The coil unit according to claim 5, characterized in that a portion between the first end and the second end is covered with injection-molded material.

7. The second housing portion further includes a plate portion, The plate portion fixes and connects the second housing portion to the first housing portion. The plate portion and the insertion port portion are injection molded as a single unit. The coil unit according to claim 5, characterized in that the first connecting member is pre-injected molded in a single row, and an injection-molded connecting portion is formed by injection molding, and the insertion opening portion has several through holes for the first end to pass through or through holes for the injection-molded connecting portion to pass through.

8. The first housing portion further comprises a first support portion, a second support portion, and a third support portion. The first housing portion further includes a first side wall portion, a second side wall portion, and a third side wall portion, The first side wall portion and the second side wall portion are arranged opposite each other, The third side wall portion is connected to the first side wall portion and the second side wall portion, respectively. The first support portion is positioned close to the first side wall portion, The second support portion is positioned close to the second side wall portion, The third support portion is positioned close to the third side wall portion, The coil unit according to claim 6, characterized in that the electronic control board is arranged in contact with the first support portion, the second support portion, and the third support portion, respectively.

9. The first housing portion further includes a fourth support portion, The third support portion is located on the side of the first end that is relatively closer to the third side wall portion. The fourth support portion is located on the side of the first end that is relatively far from the third side wall portion. The electronic control board is in contact with the fourth support portion, The first housing portion includes a first recessed groove located between the third support portion and the fourth support portion. The coil unit according to claim 8, characterized in that the portion of the first end that has passed through the electronic control board is housed in the first groove.

10. The coil unit according to claim 6, characterized in that the opening of the insertion port is provided to face upward or to face laterally.

11. The first housing section is equipped with several positioning columns, The second housing portion is provided with positioning holes corresponding to the number of positioning columns, The positioning hole is located on the lower end surface of the second housing portion. The upper end of the positioning column is located in the positioning hole, The coil unit according to claim 10, characterized in that the positioning column contacts or is fitted into the side wall forming the positioning hole to limit the lateral relative position between the first housing portion and the second housing portion.

12. The second housing portion further includes a plate portion and an insertion port portion, The plate portion fixes and connects the second housing portion to the first housing portion. The plate portion and the insertion port portion are separate structures. The plate portion is fixed and connected to the insertion port portion, and the insertion port portion is formed by injection molding the first connecting member as an injection-molded insert. The coil unit according to claim 5, characterized in that a portion of the first end and the second end is covered with injection-molded material.

13. An electric valve comprising a coil unit according to any one of claims 1 to 12, The electric valve further includes a valve member and a valve body block that are fixed and connected, The electric valve is characterized in that the coil unit is fixedly connected to the valve body block or detachably connected to it, or fixedly connected to the valve member or detachably connected to it.

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